SN74LV245ADWG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Low-voltage, Octal Bus Transceiver with 3-State Outputs
• Package: SOIC (Small Outline Integrated Circuit) - 20 pins
• Essence: This IC is designed to facilitate bidirectional level shifting between different voltage domains in digital systems.
• Packaging/Quantity: The SN74LV245ADWG4 is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: 2.4V (min) at IOH = -4mA
• Low-Level Output Voltage: 0.4V (max) at IOL = 8mA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74LV245ADWG4 has a total of 20 pins, which are assigned specific functions as follows:

1. DIR (Direction Control Input)
2. OE (Output Enable Input)
3. A1 (Data Input/Output)
4. B1 (Data Input/Output)
5. A2 (Data Input/Output)
6. B2 (Data Input/Output)
7. A3 (Data Input/Output)
8. B3 (Data Input/Output)
9. A4 (Data Input/Output)
10. B4 (Data Input/Output)
11. A5 (Data Input/Output)
12. B5 (Data Input/Output)
13. A6 (Data Input/Output)
14. B6 (Data Input/Output)
15. A7 (Data Input/Output)
16. B7 (Data Input/Output)
17. GND (Ground)
18. B8 (Data Input/Output)
19. A8 (Data Input/Output)
20. VCC (Supply Voltage)

Functional Features

• Bidirectional voltage level shifting between two voltage domains.
• 3-state outputs allow multiple devices to share a common bus.
• Supports voltage translation from 1.65V to 5.5V.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - High-speed operation for efficient data transfer. - 3-state outputs enable bus sharing among multiple devices.

Disadvantages: - Limited number of bidirectional channels (8 in total). - Not suitable for voltage translation beyond the specified range.

Working Principles

The SN74LV245ADWG4 operates by receiving data inputs from one voltage domain and translating them to the appropriate voltage level of the other domain. The direction control input (DIR) determines the direction of data flow, while the output enable input (OE) enables or disables the outputs. The IC uses internal circuitry to ensure proper voltage translation and signal integrity.

Detailed Application Field Plans

The SN74LV245ADWG4 is commonly used in various digital systems where bidirectional voltage level shifting is required. Some specific application fields include:

1. Microcontroller interfacing with different voltage peripherals.
2. Communication interfaces between devices operating at different voltage levels.
3. Bus transceivers in mixed-voltage systems.

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar functionality but operates at a lower voltage range (1.65V to 3.6V).
2. SN74HCT245: Higher voltage range (4.5V to 5.5V) and compatibility with TTL logic levels.
3. SN74LVCH245A: Supports voltage translation between 1.2V and 3.6V.

These alternative models offer similar functionality to the SN74LV245ADWG4 but may have different voltage ranges or additional features.

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